The Transient POD Method Based on Minimum Error of Bifurcation Parameter

An invariable order reduction model cannot be obtained by the adaptive proper orthogonal decomposition (POD) method in parametric domain, there exists uniqueness of with different conditions. In this paper, transient POD based on minimum error bifurcation parameter is proposed and conditions domain are provided. The equivalence optimal sampling length discussed. was applied for a high-dimensional rotor system supported sliding bearings certain speed range. effects speed, initial conditions, length, mode number existence verified, two- three-degrees-of-freedom (DOF) models were modes (POM) basis length.